Frank Jansky/Icon Sportswire
Author: Anthony Vlahovic
Last Updated: 16 May, 2025
2025 MLB Reliever of the Year Odds
Making a deep run into the MLB postseason without a strong bullpen is an almost impossible task. No matter how much the game changes, one thing that won’t change is the need for a high-level closer, but finding one is far easier said than done.
Being able to breathe a sigh of relief when a certain reliever enters a tight game is something only fans from certain teams can experience this season. Those relievers who bring a sense of calm to a hectic situation are also fighting for the Reliever of the Year Award. After Emmanuel Clase and Ryan Helsley won the 2024 Reliever of the Year award, we'll keep bettors up to date on the 2025 Reliever of the Year award.
2025 National League Reliever of the Year - Best Odds
Player | Opening Odds | Current Best Odds |
|---|---|---|
Robert Suarez | +700 | +110 (Bet365) |
Ryan Helsley | +450 | +375 (Bet365) |
Tanner Scott | +550 | +650 (Bet365) |
Edwin Diaz | +400 | +750 (Bet365*) |
Jose Alvarado | N/A | +1000 (Bet365) |
Kyle Finnegan | N/A | +1400 (Bet365) |
Justin Martinez | N/A | +1600 (Bet365) |
Shelby Miller | N/A | +1800 (Bet365) |
Raisel Iglesias | +500 | +3300 (Bet365) |
Ryan Walker | +1100 | +3300 (Bet365) |
Camilo Doval | N/A | +4000 (Bet365) |
2025 NL Reliever of the Year Odds Comparison - Top 5 Contenders
Player | |
|---|---|
Robert Suarez | +110 |
Ryan Helsley | +375 |
Tanner Scott | +650 |
Edwin Diaz | +750 |
Jose Alvarado | +1000 |
*Odds as of May 16, 2025
Current Favorites
Robert Suarez (SD Padres): In his first full season as the Padres' closer, Robert Suarez quickly proved he was one of the best in baseball. In 42 save opportunities in 2024, Suarez converted 36 of them, while also racking up 59 strikeouts and boasting a 2.77 ERA in 65 innings. To start the 2025 season, Suarez has gone 15-16 on save opportunities and is pitching to a 2.84 ERA while holding opponents to a .113 batting average.
Ryan Helsley (STL Cardinals): Ever since 2022, the man they call "Hellz Bellz" has been a force out of the Cardinals' bullpen. In his first full season as the Cardinals' lone closer, Helsley recorded a career-high 49 saves in 53 save opportunities. Helsley finished the year with 66.1 innings, in which he racked up 79 strikeouts and posted a 2.04 ERA and 2.41 FIP, which were enough to earn him his first Reliever of the Year honors. Coming off an award-winning season, Helsley has started 2025 by going 8-10 on save opportunities while sporting a 3.00 ERA.
Tanner Scott (LA Dodgers): The Dodgers had another off-season filled with big signings, but one that went under the radar was the signing of Tanner Scott. After finishing the 2024 season in San Diego, Scott has made the short trip to LA for the 2025 season, where he is 9 for 11 on save opportunities. Scott has also racked up 19 strikeouts and managed a 1.83 ERA in 19.2 innings.
2025 American League Reliever of the Year - Best Odds
Player | Opening Odds | Current Best Odds |
|---|---|---|
Andres Munoz | +900 | -105 (Bet365) |
Mason Miller | +400 | +250 (Bet365) |
Jhoan Duran | +1100 | +750 (Bet365) |
Emmanuel Clase | +300 | +1600 (Bet365) |
Felix Bautista | +1200 | +1600 (Bet365) |
Jeff Hoffman | +1200 | +1600 (Bet365) |
Josh Hader | +500 | +1600 (Bet365) |
Luke Weaver | N/A | +1600 (Bet365) |
Aroldis Chapman | N/A | +2500 (Bet365) |
Carlos Estevez | N/A | +2500 (Bet365) |
Cade Smith | N/A | +3000 (Bet365) |
2025 AL Reliever of the Year Odds Comparison - Top 5 Contenders
Player | Bet365 |
|---|---|
Andres Munoz | -105 |
Mason Miller | +250 |
Jhoan Duran | +750 |
Emmanuel Clase | +1600 |
Felix Bautista | +1600 |
*Odds as of May 16, 2025
Current Favorites
Andres Munoz (SEA Mariners): Munoz took over as the full-time closer for the Mariners last season and instantly became one of the more dominant closers in the AL. As he transitions into his second season as a full-time closer, he has not slowed down at all, converting 13 of his 15 save chances while punching out 26 hitters in 19 innings of work.
Mason Miller (Athletics): At one point last season, Mason Miller was the heavy favorite to win AL Rookie of the Year. While he did not take home that award, he still put together an All-Star-level season with 28 saves and 104 strikeouts in 65 innings of work. To kick off the 2025 season, Miller is 11 for 12 on save opportunities and already has 30 strikeouts through 15.1 innings. While Miller is also holding opponents to a .167 average, he is still working on getting his ERA down, as it is sitting at 4.70.
Jhoan Duran (MIN Twins): Since 2022, Jhoan Duran has been one of the toughest relievers to face in all of baseball. With a mix of velocity and a wicked splitter, Duran entered this season looking to bounce back after posting a career-high 3.64 ERA in 2024. Well, so far, he is back to his unhittable ways as he is sitting with a sub-one ERA and 25 strikeouts in 21.1 innings.
Past Winners
AL Winners
Season | Player | Team |
|---|---|---|
2024 | Emmanuel Clase | Cleveland Guardians |
2023 | Felix Bautista | Baltimore Orioles |
2022 | Emmanuel Clase | Cleveland Guardians |
2021 | Liam Hendricks | Chicago White Sox |
2020 | Liam Hendricks | Oakland A's |
2019 | Aroldis Chapman | New York Yankees |
NL Winners
Season | Player | Team |
|---|---|---|
2024 | Ryan Helsley | St. Louis Cardinals |
2023 | Devin Williams | Milwaukee Brewers |
2022 | Edwin Diaz | New York Mets |
2021 | Josh Hader | Milwaukee Brewers |
2020 | Devin Williams | Milwaukee Brewers |
2019 | Josh Hader | Milwaukee Brewers |
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